Building multiple boards with different config

Using Arduino Project Guidance
1

Hi,

I have a telemetry project using a Mega 2560 and have a few instances of these in different locations.

As I'm doing some bug fixes and adding new features it's getting a little tedious always changing the MAC and IP addresses in the sketch for each one and then uploading the new code.

Is there a better way to build / write a project that has a configuration that can be scaled up so it's easier to manage?

Any advice welcome.

Thanks

2

Save it to the EEPROM. That way you can use the identical program but each physical device can have a different address or different configuration.

EEPROM is not erased when programming so you can even upload a new version of your program and the device still remembers what it was.

3

Thanks MorganS, that's an interesting idea that I'm going to take further. I think it should work well for me.

4

Mind you, you probably will need to have a separate sketch to load the data into the EEPROM, perhaps by typing it into the Serial Monitor (and using the same sketch to verify).